/*
 * Copyright [2013-2021], Alibaba Group Holding Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.polardbx.optimizer.core.datatype;

import com.alibaba.polardbx.optimizer.core.dialect.DbType;
import com.alibaba.polardbx.optimizer.utils.RelUtils;
import org.apache.calcite.sql.SqlNode;
import org.junit.Test;

public class TypeCoercionUnparseTest extends DataTypeTestBase {
    @Test
    public void test() {
        SqlNode ast =
            sql("select "
                + "ifnull(integer_test, bigint_test), "
                + "ifnull(bigint_test, decimal_test), "
                + "ifnull(decimal_test, float_test), "
                + "ifnull(decimal_test, double_test) "
                + "from test")
                .toSqlNode();
        String sqlStr = RelUtils.toNativeSql(ast, DbType.MYSQL);
        System.out.println(sqlStr);
    }
}
